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Fencer Vulns
high 7.8

CVE-2018-7799 json

A DLL hijacking vulnerability exists in Schneider Electric Software Update (SESU), all versions prior to V2.2.0, which could allow an attac…

published 2018-11-02 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-19511

cvss
7.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.8%
EPSS 2.8% chance of exploitation in 30 days, percentile 86%
public exploits
0
none known

Summary

A DLL hijacking vulnerability exists in Schneider Electric Software Update (SESU), all versions prior to V2.2.0, which could allow an attacker to execute arbitrary code on the targeted system when placing a specific DLL file.

Patch / fix

  • schneider-electric software_update_utility 2.2.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-18-331-01 updated cvss 7.8

AVEVA Vijeo Citect and Citect SCADA

  • AVEVA Software, LLC Citect SCADA 2015, 2016, 7.4 AVEVA Software, LLC Vijeo Citect 2015, 7.4
    affected: mitigation “AVEVA recommends all affected users download and upgrade to the latest version of the Schneider Electric Software Update (SESU) software.” update.schneider-electric.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

cisa ICSA-18-305-02 updated cvss 7.8

Schneider Electric Software Update (SESU) (Update A)

  • Schneider Electric Software, LLC Schneider Electric Software Update (SESU) < 2.2.0
    affected: mitigation “Locate control and safety system networks and remote devices behind firewalls, and isolate them from the business network.” update.schneider-electric.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

2.79% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 7.8 CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C

Affected products

  • Schneider Electric SE Schneider Electric Software Update (SESU), all versions prior to V2.2.0

Classification

Weakness
  • CWE-427 Uncontrolled Search Path Element

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.